+-------------+-------------+------+-----+---------+-------+
| Field       | Type        | Null | Key | Default | Extra |
+-------------+-------------+------+-----+---------+-------+
| ip          | varchar(25) | YES  |     | NULL    |       |
| svr_name    | varchar(50) | YES  |     | NULL    |       |
| port_num    | varchar(6)  | YES  |     | NULL    |       |
| service     | varchar(25) | YES  |     | NULL    |       |
| description | varchar(50) | YES  |     | NULL    |       |
+-------------+-------------+------+-----+---------+-------+